import router from './router'
import store from './store'
import { Message } from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import { getToken } from '@neu/biz-core/utils/auth' // get token from cookie
import { getActiveMenu } from '@neu/biz-core/utils/utils' // get ActiveMenu from cookie
import getPageTitle from '@neu/biz-core/utils/get-page-title'

NProgress.configure({ showSpinner: false }) // NProgress Configuration

const whiteList = ['/login', '/auth-redirect'] // no redirect whitelist

router.beforeEach(async(to, from, next) => {
  // start progress bar
  NProgress.start()

  // set page title
  document.title = getPageTitle(to.meta.title, store.getters.siteTitle)

  // determine whether the user has logged in
  const hasToken = getToken()

  if (hasToken) {
    if (to.path === '/login') {
      // if is logged in, redirect to the home page
      next({ path: '/' })
      NProgress.done()
    } else {
      // determine whether the user has obtained his permission roles through getInfo
      const hasRoles = store.getters.roles && store.getters.roles.length > 0
      if (hasRoles) {
        const hisModules = store.getters.modules
        let moduleName = to.meta ? (to.meta.module ? to.meta.module : getActiveMenu()) : getActiveMenu()
        if (!hisModules.includes(moduleName)) {
          moduleName = hisModules.length > 0 ? hisModules[0] : ''
        }
        if (getActiveMenu() !== moduleName) {
          store.dispatch('app/setActiveTopMenu', moduleName)
        }
        next()
      } else {
        try {
          // get user info
          // 获取用户信息中，包含菜单权限编码
          const hisMenus = await store.dispatch('user/getInfo')
          const autoRun = store.getters.autoRun
          if (autoRun && autoRun.length > 0) {
            for (let i = 0; i < autoRun.length; i++) {
              await store.dispatch(autoRun[i], {}, { root: true })
            }
            // autoRun.forEach(async auto => await store.dispatch(auto, {}, { root: true }))
          }

          // 根据权限编码，过滤权限路由
          const accessRoutes = await store.dispatch('permission/generateRoutes', hisMenus)
          const hisModules = [...new Set(accessRoutes.filter(it => !!it.meta && it.meta.module).map(it => it.meta.module))]
          await store.dispatch('user/setModules', hisModules)
          // dynamically add accessible routes
          router.addRoutes(accessRoutes)

          // hack method to ensure that addRoutes is complete
          // set the replace: true, so the navigation will not leave a history record
          next({ ...to, replace: true })
        } catch (error) {
          // remove token and go to login page to re-login
          await store.dispatch('user/resetToken')
          Message.error(error || 'Has Error')
          next(`/login?redirect=${to.path}`)
          NProgress.done()
        }
      }
    }
  } else {
    /* has no token*/

    if (whiteList.indexOf(to.path) !== -1) {
      // in the free login whitelist, go directly
      next()
    } else {
      // other pages that do not have permission to access are redirected to the login page.
      next(`/login?redirect=${to.path}`)
      NProgress.done()
    }
  }
})

router.afterEach(() => {
  // finish progress bar
  NProgress.done()
})
